import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/LoginView.vue'
import Home from '../components/Home.vue'

Vue.use(VueRouter)

const router=new VueRouter
({
  routes: [
    {path:'/',redirect:'/login'},
  { path:'/login',component:Login},
  { path:'/home',component:Home},
]
})
// 挂载路由导航守卫
router.beforeEach((to,from,next)=>{
  // to表示将要访问的路径
  // from代表从那个路径跳转来
  // next是一个函数，表示放行
  // next() 放行 next("/login") 强制跳转
  if (to.path==='/login') return  next();
// 获取token
const tokenStr=window.sessionStorage.getItem('token');
if(!tokenStr) return next('/login');
next()
})


export default router